implemented model-specific constrains (parameter parsing)
refactoring: a response will always consist of one or more of the keys
'data', 'info' (for metadata) and 'error'
New feature "getOneMonth of records" works
implemented querying records per week (week number or date in week)
now tests are green for week
improved unit test record.testForWeek
implemented prevPage/nextPage incl. unit tests
improved YUIDoc